1) FREE FOR A FEE
Offer your prospects 3 to 4 free e-information products, if in exchange they agree to buy 3 more in a year at your regular prices. You could e-mail a small catalog of your e-information products each month.
2) MAKE IT COLLECTABLE
Make your electronic information collectable. You could only release 100 of one version. Tell your visitors only 100 people will have opportunity to buy this version. This will make people feel they need to buy now. Then, after that version runs out, create another version. Your versions can be as simple as adding a little new content, or adding free bonuses.
3) TEAM UP
Team up with other businesses. For example, if your business is selling a web business ebook and other business is selling a marketing e-course, you could cross promote using discounts or rebate offers.